Acetylene-lamp.



No. 638,l53. I Patented Nov. 28, I899. F. SUNDERLAND &. a. MARSHALL.

AGETYL'ENE LAMP.

(Application filed June 17, 1899.) (No Model.) 2 Sheets-Sheet l wn'ussszs INVENTORIS flwgd. W

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No. 638,53. 4 Patented Nov. 28, I899. F. SUNDERLAND-& a. MARSHALL.

ACETYLENE LAMP.

(Application filed June 17, 1899.) (No Model.) 2 SheetsSheet"2 Fag i f 1 d7 i LQQQTQQI INVENTO RS "m: nonms PE ER: 00.. wmoumo" wAsnmoToM, D c,

NITED STATES PATENT OFFICE.

FREDERICK SUNDERLAND AND GEORGE MARSHALL, OF BIRMINGHAM,

' ENGLAND.

ACETYLEN E-LAM P.

SPECIFICATION forming part of Letters Patent N 0. 638,153, dated November 28, 1899.

Application filed June 17, 1899. Serial No. 720,950. (No model.)

To aZZ whom it may concern.-

Be it known that we, FREDERICK SUNDER- LAND, manufacturer, residing at 80 Lionel street, Birmingham, and GEORGE MARSHALL, mechanic, residing at 21 Byron road, Small Heath, near Birmingham, England, subjects of the Queen of Great Britain, have invented certain new and useful Improvements in Acetylene-Lamps, of which the following is a specification.

This invention has relation to acetylenelamps and also to calcium-carbid cartridges for use in connection with such lamps, and has for its objects to simplify the constructionof the apparatus and to provide, in connection with the cartridges for such lamps,

means which admit of the swelling or expansion of the carbid on Water or moisture being supplied thereto without bulging the casing, to facilitate the supply and even distribution of moisture to and throughout the whole of the carbid charge, and also to enable the absorbent medium by which moisture is fed to the charge of carbid being easily introduced into the water.

Figure 1 of the accompanying drawings represents a vertical section of an acetylene cycle-lamp constructed and provided with an improved carbid-cartridge in accordance with our invention. Fig. 2 is a vertical section of the casing of the carbid-cartridge separately. Fig. 3 is a section of the paper lining thereof. Fig. 4 is an elevation of the cartridge with its lid or cover. Fig. 5 is an under side plan of the cartridge with the wick or absorbent strip removed and showing the opening in the lower end through which the said wick depends. Fig. 6 represents a plan of the cartridge with the top cover removed. Fig. 7 is a view showinghow the absorbent tail of the cartridge is introduced into the water-reser- V011.

According to our invention we propose to employ a carbid cartridge or container adapted to be placed within the upper part of the body of a lamp above the water-reservoir and having supported by suitable means within it a wick or strip of similar absorbent material passing outwardly through a hole in the bottom of the cartridge and with its tail or lower end adapted to depend into the the center, while a false bottom to the casing is domed or cupped inwardly, so that when the carbid charge expands or swells 011 being decomposed by the admitted moisture the pressure exerted by it tends to flatten the cupped bottom instead of acting upon the sides of the receptacle.

The introduction of the absorbent tail into the water is facilitated by weighting the end thereof.

The body part a of the lamp may be of a cylindrical or other convenient figure, and is closed at the top a, which may be fitted with a safety-valve I), while the bottom a is open, with the mouth thereof inside screwed at a to receive the screwed neck 0 of the waterreservoir 0, which is thereby detachably connected to the said body part and constitutes the base or foot of the lamp. From the said body part, which is adapted to receive the carbid-cartridge d (hereinafter further referred to) and constitutes a holder for the generated gas, a gas pipe or passage e proceeds to the burner f, which is surrounded by a detachable or other cone and reflector g, while to the back of the said body convenient means for connecting the lamp to a cycle or other vehicle are provided, such as the bracket-arms h,with compensating spring 7?. and socket h.

The calcium-carbid cartridge consists of a casing or cylindrical box at, preferably made of metal, the top d of which is open and fitted with a cap or lid (1 perforated at 1 with holes which when brought coincident with the gap (1 by the turning of the lid admit of the free escape of gas; but when these perforations are opposite to the solid walls of the casing moisture is prevented from gaining access to the carbid contained therein. The closed bottom (Z is provided with a small hole or orifice d surrounded by a short sleeve or neck (1 adapted to telescope or socket over or into a similar neck 0, proceeding from an opening 0 in the top of the water-reservoir 0, thus providing a convenient means of connecting the cartridge to the water-reservoir in such a manner that the latter supports the former when in position.

d is the wick or absorbent medium, made of a strip of linen, cotton, blotting-paper, or the like, and through which moisture is raised or conducted from the water-reservoir to the carbidj within the cartridge, in which the upper part of the wick is supported upright through the medium of a vertical prop composed of a rod 7L, secured at its lower end to the flat bottom of the cartridge-box, the carbid being packed closely around it, so as to be readily decomposed to generate the gas required by the moisture from the wick, whose lower end passes through the sleeved openin gs communicated between the cartridge and the neck, with the free tail end thereof depending into the water.

To keep the wick straight and for facilitating the introduction of the depending tail end thereof through the small entrance to the water-reservoir, the same maybe provided with a small lead weight 70.

When the lamp is out of action and it is desired under such circumstances to hold the wick out of the water-reservoir, the cartridge box or case d may be reversed end for end by inverting it and supporting the same in such position on the top wall of the water-reservoir. To accomplish this result, the cap or lid 61 of the box or case cl is provided with a tubular neck or sleeve 61 designed to fit in or upon the neck 0 at the top of the waterreservoir, when the box or case is reversed by inverting the same, whereby the wick will project from the box or case at the top of the lamp-casing and be held entirely out of the water-reservoir.

Arranged within the casing or shell of the cartridge, preferably around the inside walls thereof, is a lining of blotting-paper or like material on, which assists in attracting the moisture from the wick to and through the surrounding carbid, while 0 is the domed false bottom, which may either be formed as a part of the absorbent lining or be made separately from any material which will readily yield to the pressure exerted by the swelling carbid, and thereby prevent bursting of the box or case when the carbid expands or swells.

As before stated, the wick carries water from the water-reservoir to the carbid in the cartridge box or case, whereby the carbid is decomposed and the gas is formed. The gas flows from the interior of the cartridge box or case through the gap or recess d and perforations d to the interior of the lamp casing or body a, from whence it is supplied by the gas-pipe e to the gas-burnerf, as will be obvious. If the cap or lid d be turned on the box or case d to place the perforations 01 out of coincidence with the gap or recess (i the flow of gas to the interior of the lamp casing or body a is shut off, and ifthe cartridge box or case be now inverted to engage its neck or sleeve (1 with the neck 0' no moisture will be supplied to the carbid and the generation of gas will cease.

The improvements herein described are applicable to other kinds of lamps, such as hanging or table lamps, and the cross-sectional shape and size of the cartridge or container may be varied to suit the internal shape and capacity of the generating-chamber within which it is to be placed.

Having fully described our invention,what

we desire to claim and secure by Letters Patent is g 1. An acetylene-gas lamp, consisting of a lamp-casing, a water-reservoir, a gas-pipe leading from the lamp-casing, a reversible carbid-cartridge box or case having means at both ends for detachably connecting it with the water-reservoir, and provided at one end with perforations for the flow of gas therefrom to the interior of said lamp-casing, and a wick extending through one end of the cartridge box or case and adapted to dip into the water in the reservoir.

2. A11 acetylene-gas lamp, consisting of a lamp casing having a gas delivery pipe, a water-reservoir connected to said casing and having an openingin its top, a reversible car-' bid-cartridge box having means at both ends to detachably connect with said opening and perforated at one end for the flow of the gas to the interior of the lamp-casing, and awick arranged in said reversible cartridge-box and designed to extend through said opening into the water-reservoir.

3. An acetylene-gas lamp, consisting of a lamp-casing, a water-reservoir connected with the latter, a carbid-cartridge box having a bottom connected with the water-reservoir and a concavo-convex false bottom which yields to the pressure of the carbid when it expands or swells, and a wick extending from the carbid-cartridge box into the water-reservoir.

4. An acetylene-gas lamp, consisting of a water-reservoir having a tubular neck at its top, a lamp-casing above said reservoir, a carbid-cartridge box having gas-escape perforations in its upper end and an attached, depending tubular neck on its bottom wall, having a telescopic connection with the tubular neck at the top of the water-reservoir, a wicksupport arranged within and carried by said carbid-cartridge box, and a wick mounted on said wick support within the carbid cartridge box and extending therefrom through said tubular necks into the water-reservoir.

5. An acetylenegas lamp, consisting of a water-reservoir having a tubular neck at its top, a lamp-casing mounted on the water-reservoir and having a gas-delivery pipe, a reversible carbid-cartridge box having its op- Water to the carbid above said yielding concavo-convex bottom.

In testimony whereof we have hereunto set our hands in presence of two subscribing Witnesses.

FREDERICK SUNDERLAND. GEORGE MARSHALL.

Witnesses:

HENRY SKERRETT, ARTHUR T. SADLER. 

